Question

The mean of 7,5,8,p and 11 is 8.Find the value of p.
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Answer 1

Step-by-step explanation:

mean = sum of observation

_______________

no. of observation

8 = 7 + 5 + 8 + p + 11

_____________

5

8 × 5 = 31 + p

40 = 31 + p

40 - 31 = p

9 = p

Answer 2

Answer:

The value of p is 9.

The mean or the arithmetic mean is the sum of the collection of numbers divided by the count of numbers in the collection.

The numbers are 7, 5, 8, p, and 11.

The total count of numbers is 5.

Mean = sum of numbers/total count

8 = 7+5+8+p+11/5

7+5+8+p+11 = 40

31+p = 40

p = 40 - 31

Therefore, p = 9.

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